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Additional Method for Filling DNS Caches

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Paul E. Hoffman , Matt Larson
Last updated 2018-09-03 (Latest revision 2018-03-02)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


DNS recursive resolvers do not always have access to the authoritative resolvers from which they need to get information. For example, when the DNS root servers are under DDoS attack, a recursive resolver may not be able to get an answer from any of the root servers. This document describes how resolvers can populate their caches with zone information, and keep their cache populated, using out-of-band mechanisms that do not rely on the DNS protocol. The protocol is primarily designed for the root zone, but can apply to any zone that wants to participate by publishing values to be cached.


Paul E. Hoffman
Matt Larson

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)